Norton Internet Security� 2009 automatically protects you from the latest online threats including spyware, viruses, worms, phishing Web sites, and hackers, before they can cause harm.

Phishing Protection
Automatically identifies and blocks users from visiting a phishing Web site. Protects users from online identity theft. Real-time protection provides immediate threat knowledge about these transient, fraudulent sites
Wireless intruder detection and blocking
automatically detect and block unknown computers from connecting to you on public networks. Prevent hackers from taking over your computer. Allows you to freely communicate with the other computers on private networks, so you can share files, printers, etc
Intrusion Prevention
Blocks spyware, worms, viruses and hackers from entering through operating system holes to attack or take control of the computer. Shields unpatched security vulnerabilities in the operating system or in popular programs. Protects against future threats attempting to use these �security holes� to attack the computer
Auto-Protect Blocking
Detects and blocks incoming viruses, spyware and unwanted adware threats as they attempt to install on your system
Threat Category Protection Technology�Enhances the threat prevention capabilities from protection against individual worm threats to protection against entire categories of viruses, worms, Trojan horses, and spyware.

Rather than block individually identified threats, this feature now matches individual but unknown threats to known worm and virus families and blocks them from installing on the system without requiring specific virus or worm signatures.
Rootkit Protection
Detects and remove threats invisible to Windows or other security software. Detects and removes threats hidden and buried deep in the operating system
Smart Firewall�This feature automatically and continuously configures itself to allow good programs to communicate over the Internet while also automatically detecting and blocking spyware, viruses, worms and crimeware from trying to communicate out over the Internet. These security decisions are made without requiring the user to take action. This feature uses continuously updated security information that is automatically delivered to users by Symantec Security Response.